Gas burner



G. KEITH.

GAS BURNER.

APP'LlcATmN FILED sEPLis, 1921.

Patented Ap. 25,1922.

2 SHEETS-. SHEET i.

2 sIIEE'Ts-sIIEET 2.

' Unirse stares PATENT orifice.v

GEORGE KEITH, or LONDON, ENGLAND, AssIGNOE To JAMES KEITH & BLAOKMANCOMPANY, LIMITED, or LONDON, ENGLAND, A CORPORATION or GREAT BRITAIN.

GAS BURNER.

Specication Of Letters Patent. Patented Ap1r25, `1922.

Application filed September 15, 1921." Serial No. 500,730.

To all 107mm it may concern Be it known that I, GEORGE KEITH, a sublject of the King of the. United Kingdom of Great Britain and Ireland,and residing at 27 Farringdon Avenue, London, England, have invented acertain new and useful Improvement in Gas Burners, of which thefollowing is a specification.

rIhis invention relates to tubular gas burners of the type divided intotwo chambers the outer one of which has one or more longitudinal slotsand at the inlet end ofthe inner one of which is arranged a valve adapteed to allow part of the gaseous mixture ad; mitted to said chamber topass direct to the Outer chamber and thence to the outlet or outlets,without passing through the inner chamber.

According to the invention the injector body or casting, which isscrewed or otherf wise itted on to the endof the burner tube, is bent ata suit-able angle or inclined'to the axis of the burner tube, beingpreferably bent downwards, so as to clear the valve spindle whichprojects to the exterior of the burner tube, permitting the control ofthe distribution of the gas while the gas is actually burning; thebending downwards of the body of the injector serving also to reduce thelia-bility to fouling of the mixture by oven products passing out of theusual inspection doors when opened for observation.

In the accompanying drawings Fig. l is a vertical section of part of agas burner according to theinvention in which the valve is constitutedby a push and pull sleeve. Fig. 2 shows a modification in which thevalve is constituted by a rotary sleeve. C

In the form shown in Fig. l the valve spindle 3 is disconnectible fromthe valve or sleeve 4L by turning up the inner end of the spindle 3which passes through a hole in an extension 5 of the sleeve. The outerend In the form shown in Fig. 2 the inner end of the spindle 8 is splitso as to form a T head 9 which engages with cross-cuts in the end of thesleeve 10 and is retained in enf gagement by means of a spring 11pressing it inwards. In this form also the outer end of thespindle 8 isprotected from tampering by an'eXtensiOn 12 of the gland, the outer endof the spindle 8 being squared Or suitv ably shaped so' as to beoperable by a key.

In both forms the injector body or 13 is bent downwards.

With the constructions describedr and shown the distribution of the gasmay be controlled while the gas is actually'burning.

With the injector body bent downwards, as indicated, there is lessliability 'to foulcasting ing o-f the mixture byoven products which passby the usual inspection doors and .would otherwise enter the inlet ofthe injector.v

I claim A tubular gas burner comprising an inner chamber and anl outerchamber, said Outer chamber being slotted longitudinally, a valve at theinlet end of said inner chamber, said valve-adapted to allow part of thegaseous mixture admitted to said inner chamber to pass direct to theouter chamber, said valve controllable from outside the burner, and aninjector for feeding said burner, the body of said injector beinginclined to the axis of said burner.

In testimony whereof I have signed my name to this specification in thepresence of twoA subscribing witnesses.

GEORGE KEITH.

Witnesses: l

KATE FOTHERINGHAM,

ISABEL ROLLO.

